检查Java Derby中是否存在Schema

Question

I am trying to check if a schema that I have created exists. I am trying to use this line to check. I get an error saying " Lexical error at line 1, column 23. Encountered: "\\" (92), after : "". "

Here is the line of code that I use:

statement.execute("SELECT " + schema + " FROM "+ dbName + ".SCHEMATA WHERE SCHEMA_NAME = " + "'" + schema + "'");

I am making a connection just fine and the Database defiantly exists. The dbName is :

"C:/.testing/DerbyDB/AssetDB"

What am I doing wrong here?

Answer 1

Old question but is the first result so I might as well respond it.

SELECT * FROM SYS.SYSSCHEMAS

And Derby does support schemas, at least on v10.8 which is the one I'm working with.